Snap fastener



R. J. MULVEY.

SNAP FASTENER- APPLICATION Hm JULY 24. 1920.

Patented Feb. 7, 1922.

a e WM "W M Z M a .5 e 4 rd i. mm ed UNITED STATES ROBERT J. MU'IQVEY,or'cHIoAGo, ILLINOIS.

SNAP rAs'rnNEn.

Specification of Letters Patent.

Patented Feb. 7, 1922.

Application filed July 24, 1920. Serial No. 898,691..

T 0 all whom it may concern:

Be it known that I, Ronnn'r J. :MULVEY, a

citizen of the United States, and a resident of the city of Chicago,county of Cook, and State of Illinois, have invented certain new anduseful Improvements in Snap Fasteners, of which the following is aspecification.

My invention relates to new and useful improvements in snap fasteners,and has for its object the improvement in construction, form andfastening means of the female member of the present day devices. Anotherobject of the invention is the provision of such a device as to besimple in operation and economical of manufacture.

Other objects-will appear hereinafter.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Fig. l, is a plan view of the base of the female member of the clasp,

Fig. 2, is a plan view of the upper side of thefemale member,

Figure 3, a cross sectional view taken on line 33 of Fig. 1,

Fig. 4:, a sectional view of the clasp taken on line 4-4 of Fig. 3 andhaving a portion broken away,

Fig. 5, a cross sectional view taken on line 5-5 of Fig. 4, and

Fig. 6, a view of the fastening means fixed to a piece of fabric.

The preferred form of construction consists of a metallic disc 1 havingits edges in-turned to form seats for the wire fastening means 2 and thelocking means 3 and having a central depression forming a cup or socketat, said cup being slotted as at 5 and 6 to accommodate the springlocking means 3. The locking means 3 consists of a tortuously bent wirespring which is seated upon the inner circumferential surface of thedisc and having its opposite ends so bent as to allow them to seatwithin the slots 5 and 6 of the cup l, the contour of said springcausing its ends to be firmly seated in said slots. A metallic disc 7having a central opening 8 encompasses the cup l and rests upon thelocking means 3, holding it firmly in position. The inner edge of themetallic disc 1 is swaged under, forming a shoulder or seat 9. Seatedwithin said shoulder 9 and separated from the lockingjmeans by the plate7 is an S-shaped wire fastening means, one end of 1 which is seated,within the shoulder of the clasp, the other end being bent in the shapeof the letter S and having its extremity 10 bent so as to engage a loop11 formed by a protrudence of the Wire base from the shoulder 9. Theoperation of the fastening means is as follows :The bent end 10 isreleased from engagement with the loop 11 and is forced through thepiece of fabric to which it is to be attached. The clasp is then twistedclockwise about its circumference and the end 10 is again forced throughthe fabric and hooked under the loop 11, thus firmly securing the claspto the fabric.

The clasp as a whole includes a male member and a female member. Themale member, which forms the subject matter of another application, hasa projecting stud having an enlarged head which fits into the cupshapedsocket 4 and is firmly held in position in said socket by means of thelocking spring 3 fiirmly pressing against the neck of the stu "While Ihave illustrated and described the preferred form of construction for caing my invention into effect, this is capab e of variation andmodification without departing from the spirit of the invention. I,therefore, do not wish to be limited to the precise details ofconstruction set forth, but desire to avail myself of such variationsand modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secureby Letters Patent is 1. A device of the class described comprising adisc having a cup-shaped socket in the center thereof and an inturnedouter edge forming a shoulder; fastening means held in position by saidshoulder; locking means mounted upon the shoulder of said in-turnededge; and a metallic plate encompassing the socket and separating thelooking means from the fastening means, substantially as described.

2. A device of the class described comprising a disc having a cup-shapedsocket in the center thereof; slots in said socket; wire locking meanshaving its opposite ends engaging said slots; a metallic plateencompassing said socket and firmly holding the locking means inposition; and quick detachable fastening means bearing against saidplate and the shoulder formed by the in-turned edge of said disc,substantially as described. I

3. A device of the class described comprising a disc having a cup-shapedsocket in the center thereof; slots in said socket; locking meansengaging said slots; a metallic plate encompassing said socket andbearing against said locking means; and fastening means held in positionby means of the in-turned shoulder and the metallic plate,

ROBERT J. MULVEYQ Witnesses:

'JOSHUA R. H. Po'r'rs, CLARENCE E. THREEDY.

